Not a thing wrong with them (as long as one buys a good, trusted brand from a trusted and reliable source, of course). As I mentioned in my earlier post, I don't need to buy any more SD cards because I have plenty for the three older camera bodies I own which use them.
My most recently-purchased camera, the Sony A1, uses a different kind of card, CFExpress Type A, and although it can also use SD cards, of course I prefer to take advantage of the camera's features and functionality, which really benefit most from CFExpress Type A cards. At the time I purchased the camera, I also bought one Sony Tough 80 GB CFExpress card, and then shortly afterward added a second; some time I later purchased a third in the larger 160 GB capacity. Actually, I've just ordered a second 160 GB card from B&H, as with Spring coming I will be outdoors shooting a lot and I know I'll appreciate having two 160 GB cards in the camera's dual card slots. For some reason, at the present time 160 GB is the largest capacity available in Sony's Tough CFExpress Type A cards.
Much depends upon the type of shooting one does when it comes to cards, speed and capacity. When I shoot macro or closeups here at home with my A7R IV, a 64 GB capacity SD card works just fine, as I don't really shoot all that many images at a time when doing that kind of photography. However, when I go out on the boardwalk or on a several-hour shooting excursion with the A1, I need more cards and higher capacity, as I never know exactly what shooting situations will arise, especially when wildlife is involved and I'm shooting in burst mode.
I have never had any memory card -- Compact Flash (CF) back in the old days, SD or now CFExpress -- break, and I've also been fortunate enough not to ever lose one, which can actually be more of a concern when out in the field doing extensive shooting on all-day excursions, when one is rapidly churning through cards to capture potentially elusive and unusual images.